The best defense for all of Cassel's bullshit is that he hasn't faced that many winning teams the last two seasons. Just four in two years, which is shocking to be honest. I guess you could argue he hasn't had much of an opportunity to prove himself against good teams while playing with a solid supporting cast.

He has constantly ducked good teams the last two seasons by sheer fortune. Likely he would have been eviscerated by Rivers in San Diego in 2010, but our failed assassination attempt took priority.

In 2011 his convenient injury meant he didn't have to face:

New England
Pittsburgh
Green Bay

He also didn't have to face Chicago (Bears defense would have ****ed him up), Oakland with Carson Palmer or Denver on the road.

Likely he would have lost all of those and we would have even stronger evidence that he's a piece of shit.